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EM301
EM301 Explosion-proof indicator and controller for loss-in-weight

EM301 Explosion-proof indicator and controller for loss-in-weight：

Product description:

EM301 is developed from basic version, applied for dynamic weighing, completely automated continuous batching itself, using flameproof and intrinsic safety design, circuit loop with intrinsic safety for analog signal. It is suitable for potential hazardous area with dust and gas, widely used in loss-in-weight for chemical, rubber, food production, and other industries.


Key features:

• Available multi-indicator linkage feeding in proportion

• Support material level automatic control

• Self-adaptive flow filtering for anti-interference

• EMC with anti-interference design for harsh industrial working conditions

• Real-time feedback of states, flow, weight and output controlling, etc

Contact
  • SPECIFICATIONS
  • DRAWING
  • DATA SHEET
  • APPROVALS
    Product modelEM301-0-2EM301-0-0EM301-1-2EM301-1-0
    MaterialsStainless steel（0Cr18Ni9） Cast aluminium（ADC12）Stainless steel（0Cr18Ni9）Cast aluminium（ADC12）
    Cavity size (LxWxH)mm259x207x132226x175x115259x207x132226x175x115
    Weight (Kg)24122513
    Explosion-proof sign

    Ex db ib [ib Gb] llB+H2 T6 Gb,

    Ex ib tb [ib Db] lllC T80℃ Db

    Ex db [ib Gb] llC T6 Gb,

    Ex tb [ib Db] lllC T80°C Db

    AC Power85-264VAC/18-36VDC
    Protection degreeIP68(2m/2h)
    Operating temperature-20~+60
    Service entranceG3/8” M16x1.5G1/2”M20x1.5G3/4”M25x1.5
    Applicable cable diameterφ4-φ9φ6-φ12φ6-φ13
    Intrinsic safety parameter回路Uo(V)lo(mA)Po(mW)Co(μF)Lo(mH)
    +EXC7.1434239713.50.7
    +SEN7.1434239713.50.7
    +SIG7.1434239713.50.7
    -SIG7.1434239713.50.7
    -SEN7.1434239713.50.7
    -EXC7.1434239713.50.7
    Display screen4.3 " TFT full color screen

    Number of verification scale 

    intervals (e）

    		6000

    Number of  scale intervals for 

    indicator (d)

    		100000
    Number of sensorsUp to 6 350 ohm load cells (2 or 3mV/V)
    AD sampling rate1000Hz
    Load cell Excitation5VDC
    Minimum sensitivity0.5 μV/e
    Accuracy classⅢ
    KeyPad4 key top bar button; Film keyboard (expandable up to 32 keys)
    Communication protocolCommand output, Continuous output，Modbus RTU，Modbus TCP PROFINET，EtherNet/IP
    Calibration methodWeight calibration; Weight-free calibration; Remote calibration
    Flow controlling

    Automatic PID mode deals with variation in material properties, optimizes flow controlling to get best level, 

    real-time feedback of states, flow, weight and output controlling, etc. Flow switching without downtime, 

    quick response, less loss during switching.

    Flow filterSelf-adaptive flow filter for anti-interference
    Automatic supplementMaterial level automatic control, multi-mode to control supplement
    Combined error<0.03%
    Non-linearity0.06%F.S
    Repeatability0.06%F.S
    Serial ports1wayRS485（isolation）
    1wayRS232（isolation）
    1wayLAN（isolation）
    1wayCAN
    DIO interface4 inputs (optocoupler isolation) /4 outputs (relays, transistors)
    Analog quantity ※1 way 4-20mA or 0-10v
    8DIO Interface expansion board ※8 inputs (optocoupler isolation) /8 outputs (relays, transistors)
    8RLY Interface expansion board ※8 inputs (optocoupler isolation) /8 outputs (relays, transistors)
    Industrial bus option board ※PROFINET、EtherNet/IP、Profibus-DP、CC-Link

    Note:The list marked with ※ is optional, customers need to purchase separately.


    Application scenario：EM301.png

    EM301